/Engine/Source/Runtime/Foliage/Public/GrassInstancedStaticMeshComponent.h
static void BuildTreeAnyThread ( [TArray](API\Runtime\Core\Containers\TArray)< FMatrix > & InstanceTransforms, [TArray](API\Runtime\Core\Containers\TArray)< float > & InstanceCustomDataFloats, int32 NumCustomDataFloats, const FBox & MeshBox, [TArray](API\Runtime\Core\Containers\TArray)< [FClusterNode](API\Runtime\Engine\Components\FClusterNode) > & OutClusterTree, [TArray](API\Runtime\Core\Containers\TArray)< int32 > & OutSortedInstances, [TArray](API\Runtime\Core\Containers\TArray)< int32 > & OutInstanceReorderTable, int32 & OutOcclusionLayerNum, int32 MaxInstancesPerLeaf, bool InGenerateInstanceScalingRange )